Finding the Fourth Proportional to 2,528.56, 3,487.70 and 2,196.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,528.56 : 3,487.70 = 2,196.41 : x
2. Step 2: Convert to fraction form
   2,528.56/3,487.70 = 2,196.41/x
3. Step 3: Cross multiply
   2,528.56x = 3,487.70 × 2,196.41
4. Step 4: Simplify right side
   2,528.56x = 7,660,407.21
5. Step 5: Solve for x
   x = 7,660,407.21/2,528.56
6. Step 6: Final answer
   x = 3,029.56